When did the scenario of the black planet begin?

A recent scientific study answered the question asked by some people: "When did man begin to corrupt the planet, or what is called the black planet scenario?" The scientific journal Science published a report on the main cause and the moment when humans began to ruin the planet, pointing out that humans began to spoil the Earth 10,000 years ago, after the emergence of "First farmers".

The study, conducted by researchers from the College of Arizona, in the United States, on climate change and global warming, began with the beginning of the era of agriculture it almost 10,000 years ago. She pointed out that "the transformation of agriculture and grazing has affected almost more than 40% of the land area".

She explained that large-scale agricultural operations in most parts of the world, 10,000 years ago, caused great depletion of the earth's crust.

The researchers said that humans, 12,000 years ago, were only looking for food, they had to start raising animals, which still needed fertile farmland, which required the cultivation of these lands, even at the expense of weeds or forests, causing serious environmental damage.

Many scientists warn against what they call the Black Earth scenario, as climate change and global warming increase. A draft report that will be released later by the United Nations has revealed a "black" future that awaits the world, because of the continued global warming in the coming years.

"Humanity must be prepared for severe reactions from the oceans and frozen regions of the earth over the next centuries," says the document released by the Intergovernmental Panel on Climate Change. (IPCC).

"Our long habit of charging the atmosphere with carbon dioxide, which is heating up the planet, has had many consequences on us, starting with the irreversible rise in sea level."

The sea level rise due to global warming could move 280 million people, according to the draft report, in an optimistic scenario that limits the increase to 2 degrees Celsius compared to the pre-industrial revolution .

This is not the first time researchers warn of major social problems: in March, the UN declared that under normal working conditions, millions of premature deaths were expected from inability to meet human needs for food, water resources and pollutants. Fresh, which causes microbe-resistant infections, which could become a major cause of death by 2050.